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Canada Day — the First of July — is observed "not only throughout the nation, but also internationally." This year, Canada’s third-most populous province is giving the world extra cause to celebrate: on July 1, British Columbia becomes the first state or province in the Western Hemisphere with a comprehensive, revenue-neutral carbon tax.

The BC carbon tax starts at a level of $10 (Canadian) per metric ton of carbon dioxide, equivalent to 2.41 (Canadian) cents per litre of gasoline. In U.S. terms and at current exchange rates, that’s $8.91 per short ton, or just under 9 cents per gallon of gas. The rate rises by $5 in each of the next four years, reaching $30 Canadian per tonne (U.S. $26.73 per ton) in 2012.

The tax is revenue-neutral. As we reported in April, the province’s Finance Ministry has dedicated the revenues to four tax reduction measures:

A new Climate Action Credit will pay lower-income BC’ers $100 per adult and $30 per child per year.

The bottom two personal income tax rates have been reduced by 2% on the first $70,000 in earnings.

The corporate income tax rate has been reduced to 11% from the current 12%.

The small business tax rate has been cut to 3.5% from 4.5%.

Each provision will expand in tandem with the tax rate. And, showing impressive political pitch, the ministry last week preceded the tax with what it calls “an immediate Climate Action Dividend” — $100 for every man, woman and child in British Columbia — via dividend checks sent to province residents.

The BC program has catalyzed an intensive discussion of carbon taxes across Canada. Liberal Party Leader Stéphane
Dion is staking his party’s campaign to replace the Conservative government on a carbon tax featuring a $15.4 billion, four-year Green Shift. Canadians are receiving, and participating in, a national tutorial on carbon pricing, “tax vs. cap” and revenue-neutrality.

The BC tax is modest. One
source says it will deliver less than a tenth of the province’s legislated greenhouse gas reductions for 2020. That’s partly because abundant hydropower has obviated the need for fossil fuels to generate electricity. (Memo to BC: please consider an excise tax on electricity; power surpluses from price-induced conservation could be sold into the grid, with revenues flowing to the Climate Action Dividend.)

Still, the tax is a giant step — even a leap. At midnight tonight, North America will have its first large-scale, socially-mandated carbon price. Millions of carbon-impacting decisions will begin to be made with at least some recognition of the climate-curing effect of reduced carbon emissions.

Starting now, BC residents who use less carbon than average will be rewarded with an income boost. With luck, the province’s ruling Liberal Party will be rewarded as well by voters for showing courage, vision and populist appeal. And perhaps in the not too distant future the U.S. will take a page from its northern neighbor’s play book and supplement its imports of ice-hockey players and Canadian Club with something even more sustaining.